Even though Firefox 4 might not yet be ready for the public, it does not hurt to take a look at some of the nice themes that have been developed for the browser of the future. One theme that caught my eye for Firefox 4 is AvantGarde. It brings a unique new look to the Firefox 4 browser interface.

Today I have for you three themes based on the ideas and icons behind the Gnome Colors project. What is that? The Gnome Colors project really aims at making the Gnome desktop as elegant, colorful and consistent as possible.

So can these three themes, each accented with their own color stand up to the rest of the Firefox themes out there? I will let you decide.

Now that Firefox Personas are a bigger part of the Firefox skinning experience, I figured it was about time to start collecting my own lists of favorites. There is no doubt that I like to keep my browsing nice and simple – so the solid Personas for Firefox, are always going to be my favorite. Here are my ten favorite solid Firefox Personas.

One big complaint about search engines is they are all rather vanilla with their visual representation. Wouldn’t it be better if you could color code things a ‘bit more? One Greasemonkey script that does a great job at this is Colorful Search.

When you name your add-on for Firefox Incredible Bookmarks, you know you are setting the bar pretty high, right from the introduction. Pitched to users as the greatest add-on suite for bookmark lovers, Incredible Bookmarks for Firefox does impress.

The features to love here are plentiful. You can dynamically, show bookmarks by using folder and search terms. Highlight the bookmarks in any color you would like, sort the bookmarks by name, visit time, last visited and most visited, and a lot more.

One thing is for sure, with the correctly equipped Firefox browser, you too can become a better web designer or developer. How so? Well, Firefox has some really great tools for both of these jobs. Finding the one that doe the best job, is another job all on it’s own.

Firefox has a lot of web development add-ons you can use, however these are the best of the best at what they do.

Console² – Console² (pronounced Console Squared or Console Two) replaces the JavaScript Console with what could be the next generation Error Console. From v0.5 includes the Console Filter extension previously available separately from the Console² website.

User Agent Switcher – The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of the browser.

Firebug – Firebug integrates with Firefox to put a wealth of development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page.

MeasureIt – Draw out a ruler to get the pixel width and height of any elements on a webpage.

There are a number of different add-ons that will change the way your Firefox tabs look. How would you like to have one that made your tabs match your web site you are browsing. FabTabs does that.

How does it work? I’m happy you asked…

FabTabs is kind of an experimental extension for now that will color your Firefox Tabs in a way you have never seen before. By taking a small screenshot of the website you are currently viewing, and calculating the most commonly used color from that screenshot, it tries to take the 1 essential color from the website and applies it to the tab.

Sounds like a good idea. If your looking to make your tabs appear more like the pages your surfing, pick up the FabTabs add-on for Firefox.

There have been several highlighter extensions I have seen over the years for Firefox, however this one might be my favorite. The ultra light-weight Highlights add-on for Firefox simply highlights selected text on web pages with a right-click of the mouse.

To highlight text on a web page, select the text, right-click (‘Ctrl+Click’, on Mac OS X) and select ‘Highlight’ menu from the popup. The default yellow highlight color can easily be changed, by clicking the “Highlights” icon on the status bar, and choosing the color picker. To remove the highlights, simply refresh the page.

No matter if you are doing research or you just like to highlight interesting points while you read, the Highlights extension is an excellent way to mark your spot on the Web.

Have a love for the default Firefox 3 theme (also known as Strata) but just wish it was all one color? If you find yourself in this proverbial boat – I have some good news. You now have several different colors to choose from when it comes to using the default Firefox theme.